Just as the title says: US ammo boxes from WW II. In addition to the boxes for cannon ammo are .30cal and .50cal machinegun ammo boxes. I'm not sure what all the variety of boxes are for. I imagine we have boxes for 37mm and 75mm cannon ammunition, but I don't know which is which. I don't think any of these are large enough for 76mm or 3in ammo.
Once again, an expertly mastered and molded set of accessories from CMK.